It's definitely worth it! We saw the cape dolphin which are rare, the penguins, thousands of seals and giant flights of Comorant birds and even 2 whales. There had just been an orca attack on a great white shark, so we weren't able to see any great whites, but you can't contro naturel. On the way the driver asked us what we wanted to see if we said we were especially interested in penguins. He stopped by the penguin sanctuary so we could see them playing as they were healing and talk to very knowledgeable rescue/manager. The tour started off started as promised with light snacks and coffee, early start so you need it, and we headed out to the water. There were two very knowledgeable tour guides on the boat with a background in marine biology, everyone was very interested in giving information on the animals and the weather and whatever else biological you might be interested in. Overall it was perfect last day in Cape Town and have no trouble highly recommending this tour to anyone who's in Cape Town for a few days!